The likelihood that a woman in sub-Saharan Africa has HIV today is linked to whether her country was once colonized by Britain or a continental European country, according to a June 2018 study published in American Economic Review.

Evidenced by the rapidly growing salmon-farm industry, salmon is one of the world’s most popular fish. The volume of farmed Atlantic salmon increased almost 1,000 percent between 1990 and 2015, according to United Nations statistics; 75 percent of all the salmon we eat is farm-raised. Wild-caught salmon, meanwhile, has become a luxury; it’s harder to find and generally more expensive.

It’s difficult to assess the net worth of the world’s super-rich. Havens like the Cayman Islands, Switzerland and Hong Kong are happy to stash their cash, offering privacy and a shelter (often perfectly legal) from taxes. And without knowing how rich the rich are, we can’t make an accurate assessment of income inequality.

Immigrants, politicians across the spectrum regularly declare, help make America a success.The United States was founded by immigrants and their children on the idea that anyone, regardless of birth, can achieve anything.

But some groups — that is, American immigrants from certain countries — appear more successful than others. Why? The answer, a new paper explains, depends largely on the proportion of an immigrant’s home country population that moves to the U.S.

Imagine four people sharing an apple pie. In an equal world, the four each get a quarter of the pie. But in America, the rich person at the table – a corporate executive, say – is getting a bigger slice each year, while the others’ pieces are shrinking.

International trade was one of the many victims of the 2009-2010 global financial crisis. World trade flows declined by up to 9% in 2009, a third more than the 6% drop in industrial output and three times the 2.5% decrease in per-capita income. Countries with smaller economies suffered even more, with some showing a 30% decrease in the second half of 2008.